19477220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139123}}^1$

素因数の和:139139

約数の個数: 24

約数和(自身を含む): 46745664

約数和(自身を除く): 27268444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 139123, 278246, 556492, 695615, 973861, 1391230, 1947722, 2782460, 3895444, 4869305, 9738610, 19477220]

約数ペア:

[(1, 19477220), (2, 9738610), (4, 4869305), (5, 3895444), (7, 2782460), (10, 1947722), (14, 1391230), (20, 973861), (28, 695615), (35, 556492), (70, 278246), (140, 139123)]